
This Chamberlain MyQ CIGBU Internet gateway features an Ethernet port that lets you link with your router, so you can control and monitor your garage door and control your lighting using your existing Chamberlain MyQ garage door opener and light control.
Q: is this the same as the model 828LM?
A: They are brandings of the same item that are interchangeable. Can be seen on the chamberlain customer support page http://chamberlain.custhelp.com/app/answers/detail/a_id/3159/~/compatible-accessories-for-myq%E2%84%A2%2Fsec%2B2.0-enabled-garage-door-openers
Q: How many garage door openers can link to one of these ?
A: This model works with up to 16 MyQ devices.
Q: Will this device open and close my garage?
A: Yes, as long as you have a MyQ compatible garage door opener with a sensor that detects if something is in the way of it closing. You would have to download the app and operate the garage door via gateway through the app.